<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Title</title>
	<script src="jquery-1.8.3.min.js"></script>
</head>
<body>
<input type="button" id="btu" value="点击">
<script>
	$("#btu").click(function () {
		$.ajax({
			type:"get",
			url:"test02.php",
			success:function (msg) {
				alert(msg);
			}

		});
	})
</script>
</body>
</html>